*{padding:0; margin:0}
body{height:2000px;background:#fff;}
#totop{position:fixed;bottom:58px;right:7px;z-index:999;width:71px; cursor:pointer; display:none;}
*html #totop{position:absolute;cursor:pointer;right:10px; display:none;top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight)-112+"px")}
#totop a{display:block;outline:none;width:60px;height:112px;padding-top:0px;background:url(../images/zhu.png) no-repeat;_background:url(../images/zhu.gif) no-repeat;}
#totop a.cur{background-position:-58px 0;text-decoration:none;color:#3a9}